The magnetic Fenton section of the Datong Yudong Sewage Treatment Plant renovation and expansion project has been successfully put into operation

The Datong Yudong Wastewater Treatment Plant Project Background

The Datong Yudong Wastewater Treatment Plant has a treatment capacity of 100,000 cubic meters per day. Its wastewater primarily consists of pharmaceutical wastewater and pharmaceutical intermediate wastewater, characterized by complex composition, high organic content, high toxicity, dark color, high salinity, and difficulty in degradation. After pre-treatment at the pharmaceutical plant, the residual effluent from upstream water primarily consists of difficult-to-biodegrade macromolecules and antibiotics, which exhibit significant bioinhibition, making it a typical example of difficult-to-biodegrade industrial wastewater.

The first phase of the project initially employed an ozone oxidation process, but after initial implementation, it did not achieve the desired treatment results. Subsequently, a fluidized bed Fenton process was adopted; the second phase will utilize a magnetic Fenton process.

Recently, the magnetic Fenton process section of the Datong Yudong Wastewater Treatment Plant renovation and expansion project, undertaken by Guangzhou Jinchuan, has successfully commenced operation.

The Phase 1 project used a fluidized bed Fenton system, which presented the following operational and maintenance challenges:

1. High reagent consumption;

2. High power consumption and failure rate of the reflux pump;

3. Regular packing replacement required;

4. The reactor was prone to clogging, requiring frequent unclogging of the water distributor within the tower, placing a heavy workload on on-site operators;

5. Long process chain: The Fenton effluent was approximately 47 mg/L, requiring subsequent sand and carbon filtration to achieve a final effluent below 40 mg/L;

6. Annual maintenance costs exceeded 2 million RMB;

The phase 2 project utilized a magnetic Fenton system. Compared to a fluidized bed Fenton system, this system eliminates the need for a reflux pump, reducing the number of pipes on site and keeping the floor clean and tidy. There is no need to overhaul the reflux pump, replace packing, or unclog the water distributor within the tower, preventing reactor compaction and blockage, significantly reducing the workload for on-site operators.

Jinchuan Super Cheap Magnetic Fenton: Technology from Germany

Fluidized bed Fenton: COD after biochemical treatment is mostly extremely difficult to degrade. Dissolved organic matter (DOD) is surrounded by a large number of water molecules, making it difficult for hydroxyl radicals to reach the COD. A saturation attack method is used to deoxidize the COD with H₂O₂ at concentrations several times the COD level. This results in extremely high H₂O₂ consumption. In actual projects, this results in high hydrogen peroxide dosages and the need for subsequent degassing tanks.

Super Cheap Magnetic Fenton Technology: Wastewater is first magnetized, altering the order of pollutant molecules and water molecules, making hydroxyl radicals more accessible to COD. This deoxidizes the COD using a targeted removal method. H₂O₂ consumption is extremely low, only 30-40% of that of fluidized bed Fenton. In actual projects, this translates to lower hydrogen peroxide dosage and the elimination of the need for a degassing tank.

Jinchuan's Super Cheap Magnetic Fenton Technology boasts the advantages of requiring no filler, ultra-low operating costs, and zero reactor failures. It has been proven in numerous industrial park wastewater treatment projects nationwide, establishing a strong reputation for technology and quality within the industry.